(function(global) {
	/*!
 * The buffer module from node.js, for the browser.
 *
 * @author   Feross Aboukhadijeh <https://feross.org>
 * @license  MIT
 */
	/* eslint-disable no-proto */

	'use strict';

	var base64 = require('base64-js');
	var ieee754 = require('ieee754');

	exports.Buffer = Buffer;
	exports.SlowBuffer = SlowBuffer;
	exports.INSPECT_MAX_BYTES = 50;

	var K_MAX_LENGTH = 0x7fffffff;
	exports.kMaxLength = K_MAX_LENGTH;

	/**
 * If `Buffer.TYPED_ARRAY_SUPPORT`:
 *   === true    Use Uint8Array implementation (fastest)
 *   === false   Print warning and recommend using `buffer` v4.x which has an Object
 *               implementation (most compatible, even IE6)
 *
 * Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,
 * Opera 11.6+, iOS 4.2+.
 *
 * We report that the browser does not support typed arrays if the are not subclassable
 * using __proto__. Firefox 4-29 lacks support for adding new properties to `Uint8Array`
 * (See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438). IE 10 lacks support
 * for __proto__ and has a buggy typed array implementation.
 */
	Buffer.TYPED_ARRAY_SUPPORT = typedArraySupport();

	if (!Buffer.TYPED_ARRAY_SUPPORT && typeof console !== 'undefined' && typeof console.error === 'function') {
		console.error(
			'This browser lacks typed array (Uint8Array) support which is required by ' +
				'`buffer` v5.x. Use `buffer` v4.x if you require old browser support.'
		);
	}

	function typedArraySupport() {
		// Can typed array instances can be augmented?
		try {
			var arr = new Uint8Array(1);
			arr.__proto__ = {
				__proto__: Uint8Array.prototype,
				foo: function() {
					return 42;
				}
			};
			return arr.foo() === 42;
		} catch (e) {
			return false;
		}
	}

	Object.defineProperty(Buffer.prototype, 'parent', {
		enumerable: true,
		get: function() {
			if (!Buffer.isBuffer(this)) return undefined;
			return this.buffer;
		}
	});

	Object.defineProperty(Buffer.prototype, 'offset', {
		enumerable: true,
		get: function() {
			if (!Buffer.isBuffer(this)) return undefined;
			return this.byteOffset;
		}
	});

	function createBuffer(length) {
		if (length > K_MAX_LENGTH) {
			throw new RangeError('The value "' + length + '" is invalid for option "size"');
		}
		// Return an augmented `Uint8Array` instance
		var buf = new Uint8Array(length);
		buf.__proto__ = Buffer.prototype;
		return buf;
	}

	/**
 * The Buffer constructor returns instances of `Uint8Array` that have their
 * prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of
 * `Uint8Array`, so the returned instances will have all the node `Buffer` methods
 * and the `Uint8Array` methods. Square bracket notation works as expected -- it
 * returns a single octet.
 *
 * The `Uint8Array` prototype remains unmodified.
 */

	function Buffer(arg, encodingOrOffset, length) {
		// Common case.
		if (typeof arg === 'number') {
			if (typeof encodingOrOffset === 'string') {
				throw new TypeError('The "string" argument must be of type string. Received type number');
			}
			return allocUnsafe(arg);
		}
		return from(arg, encodingOrOffset, length);
	}

	// Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97
	if (typeof Symbol !== 'undefined' && Symbol.species != null && Buffer[Symbol.species] === Buffer) {
		Object.defineProperty(Buffer, Symbol.species, {
			value: null,
			configurable: true,
			enumerable: false,
			writable: false
		});
	}

	Buffer.poolSize = 8192; // not used by this implementation

	function from(value, encodingOrOffset, length) {
		if (typeof value === 'string') {
			return fromString(value, encodingOrOffset);
		}

		if (ArrayBuffer.isView(value)) {
			return fromArrayLike(value);
		}

		if (value == null) {
			throw TypeError(
				'The first argument must be one of type string, Buffer, ArrayBuffer, Array, ' +
					'or Array-like Object. Received type ' +
					typeof value
			);
		}

		if (isInstance(value, ArrayBuffer) || (value && isInstance(value.buffer, ArrayBuffer))) {
			return fromArrayBuffer(value, encodingOrOffset, length);
		}

		if (typeof value === 'number') {
			throw new TypeError('The "value" argument must not be of type number. Received type number');
		}

		var valueOf = value.valueOf && value.valueOf();
		if (valueOf != null && valueOf !== value) {
			return Buffer.from(valueOf, encodingOrOffset, length);
		}

		var b = fromObject(value);
		if (b) return b;

		if (
			typeof Symbol !== 'undefined' &&
			Symbol.toPrimitive != null &&
			typeof value[Symbol.toPrimitive] === 'function'
		) {
			return Buffer.from(value[Symbol.toPrimitive]('string'), encodingOrOffset, length);
		}

		throw new TypeError(
			'The first argument must be one of type string, Buffer, ArrayBuffer, Array, ' +
				'or Array-like Object. Received type ' +
				typeof value
		);
	}

	/**
 * Functionally equivalent to Buffer(arg, encoding) but throws a TypeError
 * if value is a number.
 * Buffer.from(str[, encoding])
 * Buffer.from(array)
 * Buffer.from(buffer)
 * Buffer.from(arrayBuffer[, byteOffset[, length]])
 **/
	Buffer.from = function(value, encodingOrOffset, length) {
		return from(value, encodingOrOffset, length);
	};

	// Note: Change prototype *after* Buffer.from is defined to workaround Chrome bug:
	// https://github.com/feross/buffer/pull/148
	Buffer.prototype.__proto__ = Uint8Array.prototype;
	Buffer.__proto__ = Uint8Array;

	function assertSize(size) {
		if (typeof size !== 'number') {
			throw new TypeError('"size" argument must be of type number');
		} else if (size < 0) {
			throw new RangeError('The value "' + size + '" is invalid for option "size"');
		}
	}

	function alloc(size, fill, encoding) {
		assertSize(size);
		if (size <= 0) {
			return createBuffer(size);
		}
		if (fill !== undefined) {
			// Only pay attention to encoding if it's a string. This
			// prevents accidentally sending in a number that would
			// be interpretted as a start offset.
			return typeof encoding === 'string'
				? createBuffer(size).fill(fill, encoding)
				: createBuffer(size).fill(fill);
		}
		return createBuffer(size);
	}

	/**
 * Creates a new filled Buffer instance.
 * alloc(size[, fill[, encoding]])
 **/
	Buffer.alloc = function(size, fill, encoding) {
		return alloc(size, fill, encoding);
	};

	function allocUnsafe(size) {
		assertSize(size);
		return createBuffer(size < 0 ? 0 : checked(size) | 0);
	}

	/**
 * Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance.
 * */
	Buffer.allocUnsafe = function(size) {
		return allocUnsafe(size);
	};
	/**
 * Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance.
 */
	Buffer.allocUnsafeSlow = function(size) {
		return allocUnsafe(size);
	};

	function fromString(string, encoding) {
		if (typeof encoding !== 'string' || encoding === '') {
			encoding = 'utf8';
		}

		if (!Buffer.isEncoding(encoding)) {
			throw new TypeError('Unknown encoding: ' + encoding);
		}

		var length = byteLength(string, encoding) | 0;
		var buf = createBuffer(length);

		var actual = buf.write(string, encoding);

		if (actual !== length) {
			// Writing a hex string, for example, that contains invalid characters will
			// cause everything after the first invalid character to be ignored. (e.g.
			// 'abxxcd' will be treated as 'ab')
			buf = buf.slice(0, actual);
		}

		return buf;
	}

	function fromArrayLike(array) {
		var length = array.length < 0 ? 0 : checked(array.length) | 0;
		var buf = createBuffer(length);
		for (var i = 0; i < length; i += 1) {
			buf[i] = array[i] & 255;
		}
		return buf;
	}

	function fromArrayBuffer(array, byteOffset, length) {
		if (byteOffset < 0 || array.byteLength < byteOffset) {
			throw new RangeError('"offset" is outside of buffer bounds');
		}

		if (array.byteLength < byteOffset + (length || 0)) {
			throw new RangeError('"length" is outside of buffer bounds');
		}

		var buf;
		if (byteOffset === undefined && length === undefined) {
			buf = new Uint8Array(array);
		} else if (length === undefined) {
			buf = new Uint8Array(array, byteOffset);
		} else {
			buf = new Uint8Array(array, byteOffset, length);
		}

		// Return an augmented `Uint8Array` instance
		buf.__proto__ = Buffer.prototype;
		return buf;
	}

	function fromObject(obj) {
		if (Buffer.isBuffer(obj)) {
			var len = checked(obj.length) | 0;
			var buf = createBuffer(len);

			if (buf.length === 0) {
				return buf;
			}

			obj.copy(buf, 0, 0, len);
			return buf;
		}

		if (obj.length !== undefined) {
			if (typeof obj.length !== 'number' || numberIsNaN(obj.length)) {
				return createBuffer(0);
			}
			return fromArrayLike(obj);
		}

		if (obj.type === 'Buffer' && Array.isArray(obj.data)) {
			return fromArrayLike(obj.data);
		}
	}

	function checked(length) {
		// Note: cannot use `length < K_MAX_LENGTH` here because that fails when
		// length is NaN (which is otherwise coerced to zero.)
		if (length >= K_MAX_LENGTH) {
			throw new RangeError(
				'Attempt to allocate Buffer larger than maximum ' + 'size: 0x' + K_MAX_LENGTH.toString(16) + ' bytes'
			);
		}
		return length | 0;
	}

	function SlowBuffer(length) {
		if (+length != length) {
			// eslint-disable-line eqeqeq
			length = 0;
		}
		return Buffer.alloc(+length);
	}

	Buffer.isBuffer = function isBuffer(b) {
		return b != null && b._isBuffer === true && b !== Buffer.prototype; // so Buffer.isBuffer(Buffer.prototype) will be false
	};

	Buffer.compare = function compare(a, b) {
		if (isInstance(a, Uint8Array)) a = Buffer.from(a, a.offset, a.byteLength);
		if (isInstance(b, Uint8Array)) b = Buffer.from(b, b.offset, b.byteLength);
		if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {
			throw new TypeError('The "buf1", "buf2" arguments must be one of type Buffer or Uint8Array');
		}

		if (a === b) return 0;

		var x = a.length;
		var y = b.length;

		for (var i = 0, len = Math.min(x, y); i < len; ++i) {
			if (a[i] !== b[i]) {
				x = a[i];
				y = b[i];
				break;
			}
		}

		if (x < y) return -1;
		if (y < x) return 1;
		return 0;
	};

	Buffer.isEncoding = function isEncoding(encoding) {
		switch (String(encoding).toLowerCase()) {
			case 'hex':
			case 'utf8':
			case 'utf-8':
			case 'ascii':
			case 'latin1':
			case 'binary':
			case 'base64':
			case 'ucs2':
			case 'ucs-2':
			case 'utf16le':
			case 'utf-16le':
				return true;
			default:
				return false;
		}
	};

	Buffer.concat = function concat(list, length) {
		if (!Array.isArray(list)) {
			throw new TypeError('"list" argument must be an Array of Buffers');
		}

		if (list.length === 0) {
			return Buffer.alloc(0);
		}

		var i;
		if (length === undefined) {
			length = 0;
			for (i = 0; i < list.length; ++i) {
				length += list[i].length;
			}
		}

		var buffer = Buffer.allocUnsafe(length);
		var pos = 0;
		for (i = 0; i < list.length; ++i) {
			var buf = list[i];
			if (isInstance(buf, Uint8Array)) {
				buf = Buffer.from(buf);
			}
			if (!Buffer.isBuffer(buf)) {
				throw new TypeError('"list" argument must be an Array of Buffers');
			}
			buf.copy(buffer, pos);
			pos += buf.length;
		}
		return buffer;
	};

	function byteLength(string, encoding) {
		if (Buffer.isBuffer(string)) {
			return string.length;
		}
		if (ArrayBuffer.isView(string) || isInstance(string, ArrayBuffer)) {
			return string.byteLength;
		}
		if (typeof string !== 'string') {
			throw new TypeError(
				'The "string" argument must be one of type string, Buffer, or ArrayBuffer. ' +
					'Received type ' +
					typeof string
			);
		}

		var len = string.length;
		var mustMatch = arguments.length > 2 && arguments[2] === true;
		if (!mustMatch && len === 0) return 0;

		// Use a for loop to avoid recursion
		var loweredCase = false;
		for (;;) {
			switch (encoding) {
				case 'ascii':
				case 'latin1':
				case 'binary':
					return len;
				case 'utf8':
				case 'utf-8':
					return utf8ToBytes(string).length;
				case 'ucs2':
				case 'ucs-2':
				case 'utf16le':
				case 'utf-16le':
					return len * 2;
				case 'hex':
					return len >>> 1;
				case 'base64':
					return base64ToBytes(string).length;
				default:
					if (loweredCase) {
						return mustMatch ? -1 : utf8ToBytes(string).length; // assume utf8
					}
					encoding = ('' + encoding).toLowerCase();
					loweredCase = true;
			}
		}
	}
	Buffer.byteLength = byteLength;

	function slowToString(encoding, start, end) {
		var loweredCase = false;

		// No need to verify that "this.length <= MAX_UINT32" since it's a read-only
		// property of a typed array.

		// This behaves neither like String nor Uint8Array in that we set start/end
		// to their upper/lower bounds if the value passed is out of range.
		// undefined is handled specially as per ECMA-262 6th Edition,
		// Section 13.3.3.7 Runtime Semantics: KeyedBindingInitialization.
		if (start === undefined || start < 0) {
			start = 0;
		}
		// Return early if start > this.length. Done here to prevent potential uint32
		// coercion fail below.
		if (start > this.length) {
			return '';
		}

		if (end === undefined || end > this.length) {
			end = this.length;
		}

		if (end <= 0) {
			return '';
		}

		// Force coersion to uint32. This will also coerce falsey/NaN values to 0.
		end >>>= 0;
		start >>>= 0;

		if (end <= start) {
			return '';
		}

		if (!encoding) encoding = 'utf8';

		while (true) {
			switch (encoding) {
				case 'hex':
					return hexSlice(this, start, end);

				case 'utf8':
				case 'utf-8':
					return utf8Slice(this, start, end);

				case 'ascii':
					return asciiSlice(this, start, end);

				case 'latin1':
				case 'binary':
					return latin1Slice(this, start, end);

				case 'base64':
					return base64Slice(this, start, end);

				case 'ucs2':
				case 'ucs-2':
				case 'utf16le':
				case 'utf-16le':
					return utf16leSlice(this, start, end);

				default:
					if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding);
					encoding = (encoding + '').toLowerCase();
					loweredCase = true;
			}
		}
	}

	// This property is used by `Buffer.isBuffer` (and the `is-buffer` npm package)
	// to detect a Buffer instance. It's not possible to use `instanceof Buffer`
	// reliably in a browserify context because there could be multiple different
	// copies of the 'buffer' package in use. This method works even for Buffer
	// instances that were created from another copy of the `buffer` package.
	// See: https://github.com/feross/buffer/issues/154
	Buffer.prototype._isBuffer = true;

	function swap(b, n, m) {
		var i = b[n];
		b[n] = b[m];
		b[m] = i;
	}

	Buffer.prototype.swap16 = function swap16() {
		var len = this.length;
		if (len % 2 !== 0) {
			throw new RangeError('Buffer size must be a multiple of 16-bits');
		}
		for (var i = 0; i < len; i += 2) {
			swap(this, i, i + 1);
		}
		return this;
	};

	Buffer.prototype.swap32 = function swap32() {
		var len = this.length;
		if (len % 4 !== 0) {
			throw new RangeError('Buffer size must be a multiple of 32-bits');
		}
		for (var i = 0; i < len; i += 4) {
			swap(this, i, i + 3);
			swap(this, i + 1, i + 2);
		}
		return this;
	};

	Buffer.prototype.swap64 = function swap64() {
		var len = this.length;
		if (len % 8 !== 0) {
			throw new RangeError('Buffer size must be a multiple of 64-bits');
		}
		for (var i = 0; i < len; i += 8) {
			swap(this, i, i + 7);
			swap(this, i + 1, i + 6);
			swap(this, i + 2, i + 5);
			swap(this, i + 3, i + 4);
		}
		return this;
	};

	Buffer.prototype.toString = function toString() {
		var length = this.length;
		if (length === 0) return '';
		if (arguments.length === 0) return utf8Slice(this, 0, length);
		return slowToString.apply(this, arguments);
	};

	Buffer.prototype.toLocaleString = Buffer.prototype.toString;

	Buffer.prototype.equals = function equals(b) {
		if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer');
		if (this === b) return true;
		return Buffer.compare(this, b) === 0;
	};

	Buffer.prototype.inspect = function inspect() {
		var str = '';
		var max = exports.INSPECT_MAX_BYTES;
		str = this.toString('hex', 0, max).replace(/(.{2})/g, '$1 ').trim();
		if (this.length > max) str += ' ... ';
		return '<Buffer ' + str + '>';
	};

	Buffer.prototype.compare = function compare(target, start, end, thisStart, thisEnd) {
		if (isInstance(target, Uint8Array)) {
			target = Buffer.from(target, target.offset, target.byteLength);
		}
		if (!Buffer.isBuffer(target)) {
			throw new TypeError(
				'The "target" argument must be one of type Buffer or Uint8Array. ' + 'Received type ' + typeof target
			);
		}

		if (start === undefined) {
			start = 0;
		}
		if (end === undefined) {
			end = target ? target.length : 0;
		}
		if (thisStart === undefined) {
			thisStart = 0;
		}
		if (thisEnd === undefined) {
			thisEnd = this.length;
		}

		if (start < 0 || end > target.length || thisStart < 0 || thisEnd > this.length) {
			throw new RangeError('out of range index');
		}

		if (thisStart >= thisEnd && start >= end) {
			return 0;
		}
		if (thisStart >= thisEnd) {
			return -1;
		}
		if (start >= end) {
			return 1;
		}

		start >>>= 0;
		end >>>= 0;
		thisStart >>>= 0;
		thisEnd >>>= 0;

		if (this === target) return 0;

		var x = thisEnd - thisStart;
		var y = end - start;
		var len = Math.min(x, y);

		var thisCopy = this.slice(thisStart, thisEnd);
		var targetCopy = target.slice(start, end);

		for (var i = 0; i < len; ++i) {
			if (thisCopy[i] !== targetCopy[i]) {
				x = thisCopy[i];
				y = targetCopy[i];
				break;
			}
		}

		if (x < y) return -1;
		if (y < x) return 1;
		return 0;
	};

	// Finds either the first index of `val` in `buffer` at offset >= `byteOffset`,
	// OR the last index of `val` in `buffer` at offset <= `byteOffset`.
	//
	// Arguments:
	// - buffer - a Buffer to search
	// - val - a string, Buffer, or number
	// - byteOffset - an index into `buffer`; will be clamped to an int32
	// - encoding - an optional encoding, relevant is val is a string
	// - dir - true for indexOf, false for lastIndexOf
	function bidirectionalIndexOf(buffer, val, byteOffset, encoding, dir) {
		// Empty buffer means no match
		if (buffer.length === 0) return -1;

		// Normalize byteOffset
		if (typeof byteOffset === 'string') {
			encoding = byteOffset;
			byteOffset = 0;
		} else if (byteOffset > 0x7fffffff) {
			byteOffset = 0x7fffffff;
		} else if (byteOffset < -0x80000000) {
			byteOffset = -0x80000000;
		}
		byteOffset = +byteOffset; // Coerce to Number.
		if (numberIsNaN(byteOffset)) {
			// byteOffset: it it's undefined, null, NaN, "foo", etc, search whole buffer
			byteOffset = dir ? 0 : buffer.length - 1;
		}

		// Normalize byteOffset: negative offsets start from the end of the buffer
		if (byteOffset < 0) byteOffset = buffer.length + byteOffset;
		if (byteOffset >= buffer.length) {
			if (dir) return -1;
			else byteOffset = buffer.length - 1;
		} else if (byteOffset < 0) {
			if (dir) byteOffset = 0;
			else return -1;
		}

		// Normalize val
		if (typeof val === 'string') {
			val = Buffer.from(val, encoding);
		}

		// Finally, search either indexOf (if dir is true) or lastIndexOf
		if (Buffer.isBuffer(val)) {
			// Special case: looking for empty string/buffer always fails
			if (val.length === 0) {
				return -1;
			}
			return arrayIndexOf(buffer, val, byteOffset, encoding, dir);
		} else if (typeof val === 'number') {
			val = val & 0xff; // Search for a byte value [0-255]
			if (typeof Uint8Array.prototype.indexOf === 'function') {
				if (dir) {
					return Uint8Array.prototype.indexOf.call(buffer, val, byteOffset);
				} else {
					return Uint8Array.prototype.lastIndexOf.call(buffer, val, byteOffset);
				}
			}
			return arrayIndexOf(buffer, [ val ], byteOffset, encoding, dir);
		}

		throw new TypeError('val must be string, number or Buffer');
	}

	function arrayIndexOf(arr, val, byteOffset, encoding, dir) {
		var indexSize = 1;
		var arrLength = arr.length;
		var valLength = val.length;

		if (encoding !== undefined) {
			encoding = String(encoding).toLowerCase();
			if (encoding === 'ucs2' || encoding === 'ucs-2' || encoding === 'utf16le' || encoding === 'utf-16le') {
				if (arr.length < 2 || val.length < 2) {
					return -1;
				}
				indexSize = 2;
				arrLength /= 2;
				valLength /= 2;
				byteOffset /= 2;
			}
		}

		function read(buf, i) {
			if (indexSize === 1) {
				return buf[i];
			} else {
				return buf.readUInt16BE(i * indexSize);
			}
		}

		var i;
		if (dir) {
			var foundIndex = -1;
			for (i = byteOffset; i < arrLength; i++) {
				if (read(arr, i) === read(val, foundIndex === -1 ? 0 : i - foundIndex)) {
					if (foundIndex === -1) foundIndex = i;
					if (i - foundIndex + 1 === valLength) return foundIndex * indexSize;
				} else {
					if (foundIndex !== -1) i -= i - foundIndex;
					foundIndex = -1;
				}
			}
		} else {
			if (byteOffset + valLength > arrLength) byteOffset = arrLength - valLength;
			for (i = byteOffset; i >= 0; i--) {
				var found = true;
				for (var j = 0; j < valLength; j++) {
					if (read(arr, i + j) !== read(val, j)) {
						found = false;
						break;
					}
				}
				if (found) return i;
			}
		}

		return -1;
	}

	Buffer.prototype.includes = function includes(val, byteOffset, encoding) {
		return this.indexOf(val, byteOffset, encoding) !== -1;
	};

	Buffer.prototype.indexOf = function indexOf(val, byteOffset, encoding) {
		return bidirectionalIndexOf(this, val, byteOffset, encoding, true);
	};

	Buffer.prototype.lastIndexOf = function lastIndexOf(val, byteOffset, encoding) {
		return bidirectionalIndexOf(this, val, byteOffset, encoding, false);
	};

	function hexWrite(buf, string, offset, length) {
		offset = Number(offset) || 0;
		var remaining = buf.length - offset;
		if (!length) {
			length = remaining;
		} else {
			length = Number(length);
			if (length > remaining) {
				length = remaining;
			}
		}

		var strLen = string.length;

		if (length > strLen / 2) {
			length = strLen / 2;
		}
		for (var i = 0; i < length; ++i) {
			var parsed = parseInt(string.substr(i * 2, 2), 16);
			if (numberIsNaN(parsed)) return i;
			buf[offset + i] = parsed;
		}
		return i;
	}

	function utf8Write(buf, string, offset, length) {
		return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length);
	}

	function asciiWrite(buf, string, offset, length) {
		return blitBuffer(asciiToBytes(string), buf, offset, length);
	}

	function latin1Write(buf, string, offset, length) {
		return asciiWrite(buf, string, offset, length);
	}

	function base64Write(buf, string, offset, length) {
		return blitBuffer(base64ToBytes(string), buf, offset, length);
	}

	function ucs2Write(buf, string, offset, length) {
		return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length);
	}

	Buffer.prototype.write = function write(string, offset, length, encoding) {
		// Buffer#write(string)
		if (offset === undefined) {
			encoding = 'utf8';
			length = this.length;
			offset = 0;
			// Buffer#write(string, encoding)
		} else if (length === undefined && typeof offset === 'string') {
			encoding = offset;
			length = this.length;
			offset = 0;
			// Buffer#write(string, offset[, length][, encoding])
		} else if (isFinite(offset)) {
			offset = offset >>> 0;
			if (isFinite(length)) {
				length = length >>> 0;
				if (encoding === undefined) encoding = 'utf8';
			} else {
				encoding = length;
				length = undefined;
			}
		} else {
			throw new Error('Buffer.write(string, encoding, offset[, length]) is no longer supported');
		}

		var remaining = this.length - offset;
		if (length === undefined || length > remaining) length = remaining;

		if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) {
			throw new RangeError('Attempt to write outside buffer bounds');
		}

		if (!encoding) encoding = 'utf8';

		var loweredCase = false;
		for (;;) {
			switch (encoding) {
				case 'hex':
					return hexWrite(this, string, offset, length);

				case 'utf8':
				case 'utf-8':
					return utf8Write(this, string, offset, length);

				case 'ascii':
					return asciiWrite(this, string, offset, length);

				case 'latin1':
				case 'binary':
					return latin1Write(this, string, offset, length);

				case 'base64':
					// Warning: maxLength not taken into account in base64Write
					return base64Write(this, string, offset, length);

				case 'ucs2':
				case 'ucs-2':
				case 'utf16le':
				case 'utf-16le':
					return ucs2Write(this, string, offset, length);

				default:
					if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding);
					encoding = ('' + encoding).toLowerCase();
					loweredCase = true;
			}
		}
	};

	Buffer.prototype.toJSON = function toJSON() {
		return {
			type: 'Buffer',
			data: Array.prototype.slice.call(this._arr || this, 0)
		};
	};

	function base64Slice(buf, start, end) {
		if (start === 0 && end === buf.length) {
			return base64.fromByteArray(buf);
		} else {
			return base64.fromByteArray(buf.slice(start, end));
		}
	}

	function utf8Slice(buf, start, end) {
		end = Math.min(buf.length, end);
		var res = [];

		var i = start;
		while (i < end) {
			var firstByte = buf[i];
			var codePoint = null;
			var bytesPerSequence = firstByte > 0xef ? 4 : firstByte > 0xdf ? 3 : firstByte > 0xbf ? 2 : 1;

			if (i + bytesPerSequence <= end) {
				var secondByte, thirdByte, fourthByte, tempCodePoint;

				switch (bytesPerSequence) {
					case 1:
						if (firstByte < 0x80) {
							codePoint = firstByte;
						}
						break;
					case 2:
						secondByte = buf[i + 1];
						if ((secondByte & 0xc0) === 0x80) {
							tempCodePoint = ((firstByte & 0x1f) << 0x6) | (secondByte & 0x3f);
							if (tempCodePoint > 0x7f) {
								codePoint = tempCodePoint;
							}
						}
						break;
					case 3:
						secondByte = buf[i + 1];
						thirdByte = buf[i + 2];
						if ((secondByte & 0xc0) === 0x80 && (thirdByte & 0xc0) === 0x80) {
							tempCodePoint =
								((firstByte & 0xf) << 0xc) | ((secondByte & 0x3f) << 0x6) | (thirdByte & 0x3f);
							if (tempCodePoint > 0x7ff && (tempCodePoint < 0xd800 || tempCodePoint > 0xdfff)) {
								codePoint = tempCodePoint;
							}
						}
						break;
					case 4:
						secondByte = buf[i + 1];
						thirdByte = buf[i + 2];
						fourthByte = buf[i + 3];
						if (
							(secondByte & 0xc0) === 0x80 &&
							(thirdByte & 0xc0) === 0x80 &&
							(fourthByte & 0xc0) === 0x80
						) {
							tempCodePoint =
								((firstByte & 0xf) << 0x12) |
								((secondByte & 0x3f) << 0xc) |
								((thirdByte & 0x3f) << 0x6) |
								(fourthByte & 0x3f);
							if (tempCodePoint > 0xffff && tempCodePoint < 0x110000) {
								codePoint = tempCodePoint;
							}
						}
				}
			}

			if (codePoint === null) {
				// we did not generate a valid codePoint so insert a
				// replacement char (U+FFFD) and advance only 1 byte
				codePoint = 0xfffd;
				bytesPerSequence = 1;
			} else if (codePoint > 0xffff) {
				// encode to utf16 (surrogate pair dance)
				codePoint -= 0x10000;
				res.push(((codePoint >>> 10) & 0x3ff) | 0xd800);
				codePoint = 0xdc00 | (codePoint & 0x3ff);
			}

			res.push(codePoint);
			i += bytesPerSequence;
		}

		return decodeCodePointsArray(res);
	}

	// Based on http://stackoverflow.com/a/22747272/680742, the browser with
	// the lowest limit is Chrome, with 0x10000 args.
	// We go 1 magnitude less, for safety
	var MAX_ARGUMENTS_LENGTH = 0x1000;

	function decodeCodePointsArray(codePoints) {
		var len = codePoints.length;
		if (len <= MAX_ARGUMENTS_LENGTH) {
			return String.fromCharCode.apply(String, codePoints); // avoid extra slice()
		}

		// Decode in chunks to avoid "call stack size exceeded".
		var res = '';
		var i = 0;
		while (i < len) {
			res += String.fromCharCode.apply(String, codePoints.slice(i, (i += MAX_ARGUMENTS_LENGTH)));
		}
		return res;
	}

	function asciiSlice(buf, start, end) {
		var ret = '';
		end = Math.min(buf.length, end);

		for (var i = start; i < end; ++i) {
			ret += String.fromCharCode(buf[i] & 0x7f);
		}
		return ret;
	}

	function latin1Slice(buf, start, end) {
		var ret = '';
		end = Math.min(buf.length, end);

		for (var i = start; i < end; ++i) {
			ret += String.fromCharCode(buf[i]);
		}
		return ret;
	}

	function hexSlice(buf, start, end) {
		var len = buf.length;

		if (!start || start < 0) start = 0;
		if (!end || end < 0 || end > len) end = len;

		var out = '';
		for (var i = start; i < end; ++i) {
			out += toHex(buf[i]);
		}
		return out;
	}

	function utf16leSlice(buf, start, end) {
		var bytes = buf.slice(start, end);
		var res = '';
		for (var i = 0; i < bytes.length; i += 2) {
			res += String.fromCharCode(bytes[i] + bytes[i + 1] * 256);
		}
		return res;
	}

	Buffer.prototype.slice = function slice(start, end) {
		var len = this.length;
		start = ~~start;
		end = end === undefined ? len : ~~end;

		if (start < 0) {
			start += len;
			if (start < 0) start = 0;
		} else if (start > len) {
			start = len;
		}

		if (end < 0) {
			end += len;
			if (end < 0) end = 0;
		} else if (end > len) {
			end = len;
		}

		if (end < start) end = start;

		var newBuf = this.subarray(start, end);
		// Return an augmented `Uint8Array` instance
		newBuf.__proto__ = Buffer.prototype;
		return newBuf;
	};

	/*
 * Need to make sure that buffer isn't trying to write out of bounds.
 */
	function checkOffset(offset, ext, length) {
		if (offset % 1 !== 0 || offset < 0) throw new RangeError('offset is not uint');
		if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length');
	}

	Buffer.prototype.readUIntLE = function readUIntLE(offset, byteLength, noAssert) {
		offset = offset >>> 0;
		byteLength = byteLength >>> 0;
		if (!noAssert) checkOffset(offset, byteLength, this.length);

		var val = this[offset];
		var mul = 1;
		var i = 0;
		while (++i < byteLength && (mul *= 0x100)) {
			val += this[offset + i] * mul;
		}

		return val;
	};

	Buffer.prototype.readUIntBE = function readUIntBE(offset, byteLength, noAssert) {
		offset = offset >>> 0;
		byteLength = byteLength >>> 0;
		if (!noAssert) {
			checkOffset(offset, byteLength, this.length);
		}

		var val = this[offset + --byteLength];
		var mul = 1;
		while (byteLength > 0 && (mul *= 0x100)) {
			val += this[offset + --byteLength] * mul;
		}

		return val;
	};

	Buffer.prototype.readUInt8 = function readUInt8(offset, noAssert) {
		offset = offset >>> 0;
		if (!noAssert) checkOffset(offset, 1, this.length);
		return this[offset];
	};

	Buffer.prototype.readUInt16LE = function readUInt16LE(offset, noAssert) {
		offset = offset >>> 0;
		if (!noAssert) checkOffset(offset, 2, this.length);
		return this[offset] | (this[offset + 1] << 8);
	};

	Buffer.prototype.readUInt16BE = function readUInt16BE(offset, noAssert) {
		offset = offset >>> 0;
		if (!noAssert) checkOffset(offset, 2, this.length);
		return (this[offset] << 8) | this[offset + 1];
	};

	Buffer.prototype.readUInt32LE = function readUInt32LE(offset, noAssert) {
		offset = offset >>> 0;
		if (!noAssert) checkOffset(offset, 4, this.length);

		return (this[offset] | (this[offset + 1] << 8) | (this[offset + 2] << 16)) + this[offset + 3] * 0x1000000;
	};

	Buffer.prototype.readUInt32BE = function readUInt32BE(offset, noAssert) {
		offset = offset >>> 0;
		if (!noAssert) checkOffset(offset, 4, this.length);

		return this[offset] * 0x1000000 + ((this[offset + 1] << 16) | (this[offset + 2] << 8) | this[offset + 3]);
	};

	Buffer.prototype.readIntLE = function readIntLE(offset, byteLength, noAssert) {
		offset = offset >>> 0;
		byteLength = byteLength >>> 0;
		if (!noAssert) checkOffset(offset, byteLength, this.length);

		var val = this[offset];
		var mul = 1;
		var i = 0;
		while (++i < byteLength && (mul *= 0x100)) {
			val += this[offset + i] * mul;
		}
		mul *= 0x80;

		if (val >= mul) val -= Math.pow(2, 8 * byteLength);

		return val;
	};

	Buffer.prototype.readIntBE = function readIntBE(offset, byteLength, noAssert) {
		offset = offset >>> 0;
		byteLength = byteLength >>> 0;
		if (!noAssert) checkOffset(offset, byteLength, this.length);

		var i = byteLength;
		var mul = 1;
		var val = this[offset + --i];
		while (i > 0 && (mul *= 0x100)) {
			val += this[offset + --i] * mul;
		}
		mul *= 0x80;

		if (val >= mul) val -= Math.pow(2, 8 * byteLength);

		return val;
	};

	Buffer.prototype.readInt8 = function readInt8(offset, noAssert) {
		offset = offset >>> 0;
		if (!noAssert) checkOffset(offset, 1, this.length);
		if (!(this[offset] & 0x80)) return this[offset];
		return (0xff - this[offset] + 1) * -1;
	};

	Buffer.prototype.readInt16LE = function readInt16LE(offset, noAssert) {
		offset = offset >>> 0;
		if (!noAssert) checkOffset(offset, 2, this.length);
		var val = this[offset] | (this[offset + 1] << 8);
		return val & 0x8000 ? val | 0xffff0000 : val;
	};

	Buffer.prototype.readInt16BE = function readInt16BE(offset, noAssert) {
		offset = offset >>> 0;
		if (!noAssert) checkOffset(offset, 2, this.length);
		var val = this[offset + 1] | (this[offset] << 8);
		return val & 0x8000 ? val | 0xffff0000 : val;
	};

	Buffer.prototype.readInt32LE = function readInt32LE(offset, noAssert) {
		offset = offset >>> 0;
		if (!noAssert) checkOffset(offset, 4, this.length);

		return this[offset] | (this[offset + 1] << 8) | (this[offset + 2] << 16) | (this[offset + 3] << 24);
	};

	Buffer.prototype.readInt32BE = function readInt32BE(offset, noAssert) {
		offset = offset >>> 0;
		if (!noAssert) checkOffset(offset, 4, this.length);

		return (this[offset] << 24) | (this[offset + 1] << 16) | (this[offset + 2] << 8) | this[offset + 3];
	};

	Buffer.prototype.readFloatLE = function readFloatLE(offset, noAssert) {
		offset = offset >>> 0;
		if (!noAssert) checkOffset(offset, 4, this.length);
		return ieee754.read(this, offset, true, 23, 4);
	};

	Buffer.prototype.readFloatBE = function readFloatBE(offset, noAssert) {
		offset = offset >>> 0;
		if (!noAssert) checkOffset(offset, 4, this.length);
		return ieee754.read(this, offset, false, 23, 4);
	};

	Buffer.prototype.readDoubleLE = function readDoubleLE(offset, noAssert) {
		offset = offset >>> 0;
		if (!noAssert) checkOffset(offset, 8, this.length);
		return ieee754.read(this, offset, true, 52, 8);
	};

	Buffer.prototype.readDoubleBE = function readDoubleBE(offset, noAssert) {
		offset = offset >>> 0;
		if (!noAssert) checkOffset(offset, 8, this.length);
		return ieee754.read(this, offset, false, 52, 8);
	};

	function checkInt(buf, value, offset, ext, max, min) {
		if (!Buffer.isBuffer(buf)) throw new TypeError('"buffer" argument must be a Buffer instance');
		if (value > max || value < min) throw new RangeError('"value" argument is out of bounds');
		if (offset + ext > buf.length) throw new RangeError('Index out of range');
	}

	Buffer.prototype.writeUIntLE = function writeUIntLE(value, offset, byteLength, noAssert) {
		value = +value;
		offset = offset >>> 0;
		byteLength = byteLength >>> 0;
		if (!noAssert) {
			var maxBytes = Math.pow(2, 8 * byteLength) - 1;
			checkInt(this, value, offset, byteLength, maxBytes, 0);
		}

		var mul = 1;
		var i = 0;
		this[offset] = value & 0xff;
		while (++i < byteLength && (mul *= 0x100)) {
			this[offset + i] = (value / mul) & 0xff;
		}

		return offset + byteLength;
	};

	Buffer.prototype.writeUIntBE = function writeUIntBE(value, offset, byteLength, noAssert) {
		value = +value;
		offset = offset >>> 0;
		byteLength = byteLength >>> 0;
		if (!noAssert) {
			var maxBytes = Math.pow(2, 8 * byteLength) - 1;
			checkInt(this, value, offset, byteLength, maxBytes, 0);
		}

		var i = byteLength - 1;
		var mul = 1;
		this[offset + i] = value & 0xff;
		while (--i >= 0 && (mul *= 0x100)) {
			this[offset + i] = (value / mul) & 0xff;
		}

		return offset + byteLength;
	};

	Buffer.prototype.writeUInt8 = function writeUInt8(value, offset, noAssert) {
		value = +value;
		offset = offset >>> 0;
		if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0);
		this[offset] = value & 0xff;
		return offset + 1;
	};

	Buffer.prototype.writeUInt16LE = function writeUInt16LE(value, offset, noAssert) {
		value = +value;
		offset = offset >>> 0;
		if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0);
		this[offset] = value & 0xff;
		this[offset + 1] = value >>> 8;
		return offset + 2;
	};

	Buffer.prototype.writeUInt16BE = function writeUInt16BE(value, offset, noAssert) {
		value = +value;
		offset = offset >>> 0;
		if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0);
		this[offset] = value >>> 8;
		this[offset + 1] = value & 0xff;
		return offset + 2;
	};

	Buffer.prototype.writeUInt32LE = function writeUInt32LE(value, offset, noAssert) {
		value = +value;
		offset = offset >>> 0;
		if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0);
		this[offset + 3] = value >>> 24;
		this[offset + 2] = value >>> 16;
		this[offset + 1] = value >>> 8;
		this[offset] = value & 0xff;
		return offset + 4;
	};

	Buffer.prototype.writeUInt32BE = function writeUInt32BE(value, offset, noAssert) {
		value = +value;
		offset = offset >>> 0;
		if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0);
		this[offset] = value >>> 24;
		this[offset + 1] = value >>> 16;
		this[offset + 2] = value >>> 8;
		this[offset + 3] = value & 0xff;
		return offset + 4;
	};

	Buffer.prototype.writeIntLE = function writeIntLE(value, offset, byteLength, noAssert) {
		value = +value;
		offset = offset >>> 0;
		if (!noAssert) {
			var limit = Math.pow(2, 8 * byteLength - 1);

			checkInt(this, value, offset, byteLength, limit - 1, -limit);
		}

		var i = 0;
		var mul = 1;
		var sub = 0;
		this[offset] = value & 0xff;
		while (++i < byteLength && (mul *= 0x100)) {
			if (value < 0 && sub === 0 && this[offset + i - 1] !== 0) {
				sub = 1;
			}
			this[offset + i] = (((value / mul) >> 0) - sub) & 0xff;
		}

		return offset + byteLength;
	};

	Buffer.prototype.writeIntBE = function writeIntBE(value, offset, byteLength, noAssert) {
		value = +value;
		offset = offset >>> 0;
		if (!noAssert) {
			var limit = Math.pow(2, 8 * byteLength - 1);

			checkInt(this, value, offset, byteLength, limit - 1, -limit);
		}

		var i = byteLength - 1;
		var mul = 1;
		var sub = 0;
		this[offset + i] = value & 0xff;
		while (--i >= 0 && (mul *= 0x100)) {
			if (value < 0 && sub === 0 && this[offset + i + 1] !== 0) {
				sub = 1;
			}
			this[offset + i] = (((value / mul) >> 0) - sub) & 0xff;
		}

		return offset + byteLength;
	};

	Buffer.prototype.writeInt8 = function writeInt8(value, offset, noAssert) {
		value = +value;
		offset = offset >>> 0;
		if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80);
		if (value < 0) value = 0xff + value + 1;
		this[offset] = value & 0xff;
		return offset + 1;
	};

	Buffer.prototype.writeInt16LE = function writeInt16LE(value, offset, noAssert) {
		value = +value;
		offset = offset >>> 0;
		if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000);
		this[offset] = value & 0xff;
		this[offset + 1] = value >>> 8;
		return offset + 2;
	};

	Buffer.prototype.writeInt16BE = function writeInt16BE(value, offset, noAssert) {
		value = +value;
		offset = offset >>> 0;
		if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000);
		this[offset] = value >>> 8;
		this[offset + 1] = value & 0xff;
		return offset + 2;
	};

	Buffer.prototype.writeInt32LE = function writeInt32LE(value, offset, noAssert) {
		value = +value;
		offset = offset >>> 0;
		if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000);
		this[offset] = value & 0xff;
		this[offset + 1] = value >>> 8;
		this[offset + 2] = value >>> 16;
		this[offset + 3] = value >>> 24;
		return offset + 4;
	};

	Buffer.prototype.writeInt32BE = function writeInt32BE(value, offset, noAssert) {
		value = +value;
		offset = offset >>> 0;
		if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000);
		if (value < 0) value = 0xffffffff + value + 1;
		this[offset] = value >>> 24;
		this[offset + 1] = value >>> 16;
		this[offset + 2] = value >>> 8;
		this[offset + 3] = value & 0xff;
		return offset + 4;
	};

	function checkIEEE754(buf, value, offset, ext, max, min) {
		if (offset + ext > buf.length) throw new RangeError('Index out of range');
		if (offset < 0) throw new RangeError('Index out of range');
	}

	function writeFloat(buf, value, offset, littleEndian, noAssert) {
		value = +value;
		offset = offset >>> 0;
		if (!noAssert) {
			checkIEEE754(buf, value, offset, 4, 3.4028234663852886e38, -3.4028234663852886e38);
		}
		ieee754.write(buf, value, offset, littleEndian, 23, 4);
		return offset + 4;
	}

	Buffer.prototype.writeFloatLE = function writeFloatLE(value, offset, noAssert) {
		return writeFloat(this, value, offset, true, noAssert);
	};

	Buffer.prototype.writeFloatBE = function writeFloatBE(value, offset, noAssert) {
		return writeFloat(this, value, offset, false, noAssert);
	};

	function writeDouble(buf, value, offset, littleEndian, noAssert) {
		value = +value;
		offset = offset >>> 0;
		if (!noAssert) {
			checkIEEE754(buf, value, offset, 8, 1.7976931348623157e308, -1.7976931348623157e308);
		}
		ieee754.write(buf, value, offset, littleEndian, 52, 8);
		return offset + 8;
	}

	Buffer.prototype.writeDoubleLE = function writeDoubleLE(value, offset, noAssert) {
		return writeDouble(this, value, offset, true, noAssert);
	};

	Buffer.prototype.writeDoubleBE = function writeDoubleBE(value, offset, noAssert) {
		return writeDouble(this, value, offset, false, noAssert);
	};

	// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)
	Buffer.prototype.copy = function copy(target, targetStart, start, end) {
		if (!Buffer.isBuffer(target)) throw new TypeError('argument should be a Buffer');
		if (!start) start = 0;
		if (!end && end !== 0) end = this.length;
		if (targetStart >= target.length) targetStart = target.length;
		if (!targetStart) targetStart = 0;
		if (end > 0 && end < start) end = start;

		// Copy 0 bytes; we're done
		if (end === start) return 0;
		if (target.length === 0 || this.length === 0) return 0;

		// Fatal error conditions
		if (targetStart < 0) {
			throw new RangeError('targetStart out of bounds');
		}
		if (start < 0 || start >= this.length) throw new RangeError('Index out of range');
		if (end < 0) throw new RangeError('sourceEnd out of bounds');

		// Are we oob?
		if (end > this.length) end = this.length;
		if (target.length - targetStart < end - start) {
			end = target.length - targetStart + start;
		}

		var len = end - start;

		if (this === target && typeof Uint8Array.prototype.copyWithin === 'function') {
			// Use built-in when available, missing from IE11
			this.copyWithin(targetStart, start, end);
		} else if (this === target && start < targetStart && targetStart < end) {
			// descending copy from end
			for (var i = len - 1; i >= 0; --i) {
				target[i + targetStart] = this[i + start];
			}
		} else {
			Uint8Array.prototype.set.call(target, this.subarray(start, end), targetStart);
		}

		return len;
	};

	// Usage:
	//    buffer.fill(number[, offset[, end]])
	//    buffer.fill(buffer[, offset[, end]])
	//    buffer.fill(string[, offset[, end]][, encoding])
	Buffer.prototype.fill = function fill(val, start, end, encoding) {
		// Handle string cases:
		if (typeof val === 'string') {
			if (typeof start === 'string') {
				encoding = start;
				start = 0;
				end = this.length;
			} else if (typeof end === 'string') {
				encoding = end;
				end = this.length;
			}
			if (encoding !== undefined && typeof encoding !== 'string') {
				throw new TypeError('encoding must be a string');
			}
			if (typeof encoding === 'string' && !Buffer.isEncoding(encoding)) {
				throw new TypeError('Unknown encoding: ' + encoding);
			}
			if (val.length === 1) {
				var code = val.charCodeAt(0);
				if ((encoding === 'utf8' && code < 128) || encoding === 'latin1') {
					// Fast path: If `val` fits into a single byte, use that numeric value.
					val = code;
				}
			}
		} else if (typeof val === 'number') {
			val = val & 255;
		}

		// Invalid ranges are not set to a default, so can range check early.
		if (start < 0 || this.length < start || this.length < end) {
			throw new RangeError('Out of range index');
		}

		if (end <= start) {
			return this;
		}

		start = start >>> 0;
		end = end === undefined ? this.length : end >>> 0;

		if (!val) val = 0;

		var i;
		if (typeof val === 'number') {
			for (i = start; i < end; ++i) {
				this[i] = val;
			}
		} else {
			var bytes = Buffer.isBuffer(val) ? val : Buffer.from(val, encoding);
			var len = bytes.length;
			if (len === 0) {
				throw new TypeError('The value "' + val + '" is invalid for argument "value"');
			}
			for (i = 0; i < end - start; ++i) {
				this[i + start] = bytes[i % len];
			}
		}

		return this;
	};

	// HELPER FUNCTIONS
	// ================

	var INVALID_BASE64_RE = /[^+/0-9A-Za-z-_]/g;

	function base64clean(str) {
		// Node takes equal signs as end of the Base64 encoding
		str = str.split('=')[0];
		// Node strips out invalid characters like \n and \t from the string, base64-js does not
		str = str.trim().replace(INVALID_BASE64_RE, '');
		// Node converts strings with length < 2 to ''
		if (str.length < 2) return '';
		// Node allows for non-padded base64 strings (missing trailing ===), base64-js does not
		while (str.length % 4 !== 0) {
			str = str + '=';
		}
		return str;
	}

	function toHex(n) {
		if (n < 16) return '0' + n.toString(16);
		return n.toString(16);
	}

	function utf8ToBytes(string, units) {
		units = units || Infinity;
		var codePoint;
		var length = string.length;
		var leadSurrogate = null;
		var bytes = [];

		for (var i = 0; i < length; ++i) {
			codePoint = string.charCodeAt(i);

			// is surrogate component
			if (codePoint > 0xd7ff && codePoint < 0xe000) {
				// last char was a lead
				if (!leadSurrogate) {
					// no lead yet
					if (codePoint > 0xdbff) {
						// unexpected trail
						if ((units -= 3) > -1) bytes.push(0xef, 0xbf, 0xbd);
						continue;
					} else if (i + 1 === length) {
						// unpaired lead
						if ((units -= 3) > -1) bytes.push(0xef, 0xbf, 0xbd);
						continue;
					}

					// valid lead
					leadSurrogate = codePoint;

					continue;
				}

				// 2 leads in a row
				if (codePoint < 0xdc00) {
					if ((units -= 3) > -1) bytes.push(0xef, 0xbf, 0xbd);
					leadSurrogate = codePoint;
					continue;
				}

				// valid surrogate pair
				codePoint = (((leadSurrogate - 0xd800) << 10) | (codePoint - 0xdc00)) + 0x10000;
			} else if (leadSurrogate) {
				// valid bmp char, but last char was a lead
				if ((units -= 3) > -1) bytes.push(0xef, 0xbf, 0xbd);
			}

			leadSurrogate = null;

			// encode utf8
			if (codePoint < 0x80) {
				if ((units -= 1) < 0) break;
				bytes.push(codePoint);
			} else if (codePoint < 0x800) {
				if ((units -= 2) < 0) break;
				bytes.push((codePoint >> 0x6) | 0xc0, (codePoint & 0x3f) | 0x80);
			} else if (codePoint < 0x10000) {
				if ((units -= 3) < 0) break;
				bytes.push((codePoint >> 0xc) | 0xe0, ((codePoint >> 0x6) & 0x3f) | 0x80, (codePoint & 0x3f) | 0x80);
			} else if (codePoint < 0x110000) {
				if ((units -= 4) < 0) break;
				bytes.push(
					(codePoint >> 0x12) | 0xf0,
					((codePoint >> 0xc) & 0x3f) | 0x80,
					((codePoint >> 0x6) & 0x3f) | 0x80,
					(codePoint & 0x3f) | 0x80
				);
			} else {
				throw new Error('Invalid code point');
			}
		}

		return bytes;
	}

	function asciiToBytes(str) {
		var byteArray = [];
		for (var i = 0; i < str.length; ++i) {
			// Node's code seems to be doing this and not & 0x7F..
			byteArray.push(str.charCodeAt(i) & 0xff);
		}
		return byteArray;
	}

	function utf16leToBytes(str, units) {
		var c, hi, lo;
		var byteArray = [];
		for (var i = 0; i < str.length; ++i) {
			if ((units -= 2) < 0) break;

			c = str.charCodeAt(i);
			hi = c >> 8;
			lo = c % 256;
			byteArray.push(lo);
			byteArray.push(hi);
		}

		return byteArray;
	}

	function base64ToBytes(str) {
		return base64.toByteArray(base64clean(str));
	}

	function blitBuffer(src, dst, offset, length) {
		for (var i = 0; i < length; ++i) {
			if (i + offset >= dst.length || i >= src.length) break;
			dst[i + offset] = src[i];
		}
		return i;
	}

	// ArrayBuffer or Uint8Array objects from other contexts (i.e. iframes) do not pass
	// the `instanceof` check but they should be treated as of that type.
	// See: https://github.com/feross/buffer/issues/166
	function isInstance(obj, type) {
		return (
			obj instanceof type ||
			(obj != null &&
				obj.constructor != null &&
				obj.constructor.name != null &&
				obj.constructor.name === type.name)
		);
	}
	function numberIsNaN(obj) {
		// For IE11 support
		return obj !== obj; // eslint-disable-line no-self-compare
	}
}.call(
	this,
	typeof global !== 'undefined'
		? global
		: typeof self !== 'undefined' ? self : typeof window !== 'undefined' ? window : {}
));
